#include<stdio.h>
#define MAX 3

void add(int* a);

int main(void) {

  int a[MAX] = {2,5,3};
  int i;

  printf ("In main() function:\n");
  printf ("Before addition: ");
  for (i = 0; i < MAX; i++)
    printf ("a[%d]:%d   ", i, a[i]);
  printf ("\n\n");

  add(a);

  printf ("Back in main() function:\n");
  for (i = 0; i < MAX; i++)
    printf ("a[%d]:%d   ", i, a[i]);
  printf ("\n");

 
  return 0;
}

     
void add(int* a){

   int i;
   int x;

   a += 1;

  printf ("In add() function:\n");
  printf ("After addition: ");
  for (i = 0; i < MAX; i++)
    printf ("a[%d]:%d   ", i, a[i]);
  printf ("\n");
 
  x = *a;
  *a = 23;

  printf ("x is: %d\n", x);
  printf ("After manipulation:");
  for (i = 0; i < MAX; i++)
    printf ("a[%d]:%d   ", i, a[i]);
  printf ("\n\n");
}